7
1
9
3
5
3
6
2
1
9
9
3
7
9
6
2
3
1
8
8
1
3
5
9
6
2
9
1
3
8
7
1
9
3
7
9
5
3
1
7
3
4
5
9

This Sudoku Puzzle has 42 steps and it is solved using Locked Candidates Type 1 (Pointing), Naked Pair, Naked Single, Hidden Single, Full House techniques.

Try To Solve This Puzzle

Solution Steps:

  1. Locked Candidates Type 1 (Pointing): 2 in b1 => r8c1<>2
  2. Locked Candidates Type 1 (Pointing): 4 in b4 => r4c89<>4
  3. Locked Candidates Type 1 (Pointing): 5 in b4 => r4c89<>5
  4. Locked Candidates Type 1 (Pointing): 8 in b8 => r2c5<>8
  5. Naked Pair: 2,6 in r49c9 => r238c9<>6, r38c9<>2
  6. Row 8 / Column 9 → 1 (Naked Single)
  7. Row 2 / Column 8 → 1 (Hidden Single)
  8. Row 2 / Column 1 → 6 (Hidden Single)
  9. Row 8 / Column 1 → 8 (Naked Single)
  10. Row 2 / Column 2 → 8 (Hidden Single)
  11. Row 7 / Column 7 → 8 (Hidden Single)
  12. Row 1 / Column 7 → 2 (Naked Single)
  13. Row 3 / Column 7 → 6 (Full House)
  14. Row 1 / Column 1 → 4 (Naked Single)
  15. Row 1 / Column 8 → 8 (Full House)
  16. Row 3 / Column 3 → 5 (Naked Single)
  17. Row 3 / Column 1 → 2 (Full House)
  18. Row 4 / Column 1 → 5 (Full House)
  19. Row 4 / Column 2 → 4 (Full House)
  20. Row 3 / Column 8 → 4 (Naked Single)
  21. Row 9 / Column 2 → 2 (Naked Single)
  22. Row 7 / Column 2 → 5 (Full House)
  23. Row 3 / Column 9 → 7 (Naked Single)
  24. Row 2 / Column 9 → 5 (Full House)
  25. Row 3 / Column 6 → 8 (Full House)
  26. Row 6 / Column 8 → 5 (Naked Single)
  27. Row 6 / Column 9 → 4 (Full House)
  28. Row 9 / Column 9 → 6 (Naked Single)
  29. Row 4 / Column 9 → 2 (Full House)
  30. Row 8 / Column 8 → 2 (Full House)
  31. Row 4 / Column 8 → 6 (Full House)
  32. Row 9 / Column 3 → 4 (Naked Single)
  33. Row 7 / Column 3 → 6 (Full House)
  34. Row 9 / Column 5 → 8 (Full House)
  35. Row 8 / Column 5 → 7 (Naked Single)
  36. Row 8 / Column 4 → 6 (Full House)
  37. Row 7 / Column 4 → 4 (Naked Single)
  38. Row 5 / Column 4 → 7 (Full House)
  39. Row 7 / Column 5 → 2 (Full House)
  40. Row 2 / Column 5 → 4 (Full House)
  41. Row 5 / Column 6 → 4 (Full House)
  42. Row 2 / Column 6 → 7 (Full House)
Show More...